Boiler



NOV. 27, 193A. G

v Filed Jan. 1l, 1953 l.. B ANTA l 1,981,895

BOILER 2 Sheets-Sheet 1 1' El* l lig- Bnventor 6;@ Bana BBM (Itlorneg G. L.. BANTA 1,981,895

BOILER 2 sheets-sheet 2 v Filed Jan. 11, 1.955

A Patented Nav. 27, 1934 UNITED s'rpfras' PATENT oFFlcie.

1,981,895 norma Guy L. Banta, Portland, Oreg. Application .mm1-11, 1933, serial No. 651,14s

z emma. (c1. 1227165) My invention relates to improvements in boilers. My new and improved boiler is made primarily from sheet material having reinforcing stay bolts disposed within the sheets to strength- I en and reinforce the same. The sidewall of the inner or fire box shell of the. boiler is cut away to permit the end sheets of the boiler being fitted thereinto to provide a predetermined path for the flow of the products of'bombustion from the fire box to the smoke stack. This givesl a maximum heating capacity without the use of flues or tubes. Suitable stay bolts are provided between the inner and outer shell members and in the bent end members.A

The primary purpose and object of my invention consists in providing a boiler constructionv that will reduce the labor'cost of building the same. Y

A still further object of my inventionl consists in providing a boiler construction that produces a boiler having a maximum heating capacity without the use of tubes or ues.

And a still further object of my invention consists in so constructing the boiler shell that it one-piece boiler shell structure.

And a still further object of my invention consists in so constructing, assembling-and fabricating the boiler shell that it will havev a long and useful life with practical 'freedom from mechanical and operating annoyances.

With these and incidental objects in view, the inventionconsists in certain novel features of construction and combination o f parts; the essential elements of which are setforth in th appended specification and claims.

'In the. drawings: Fig. 1 is a perspective end bled boiler. Fig.. 2 is a perspective end view of the boiler.

This view is ofthe end yopposite to that illustrated in Fig. 1.

Fig. 3 is a longitudinal sectional side view of the assembled boiler. This viewl is taken on line view of the assem- ,45 V3--3 of Fig. 2, looking in the direction indicated.

Fig. 4 is, a sectional end View of the assembled boiler. This View is taken on line 4-4 of Fig. 3, lookingv in the direction indicated.

Fig. 5 is a perspective end view of Vthe inner .50 shell of the boiler.

Fig. lisv a vperspective end view of oneofthe en d plates of the boiler shown removed from the inner side wall shell. This view shows the end` is adapted for being welded together to form a Fig. lTis a perspective end view of theother of the end shell members. This view shows the end shell inposition for being' assembled into the inner side wall shell member. 1 Fig. 8 is a perspective end view of the outer 60 shell member.

Fig. 9 is a perspective end View 'of tlie outer end of one of the shell members. This view shows the end shell member in position for being assembled relative to the outer side wall shell member.

Fig. 10 is a perspective end view of the other one of the outer end wall members. This View shows the outer end wall member in position for being'assembled relative to one end of the 70 outer side shell member.

Like reference characters refer to like parts throughout the several views.

I preferably fabricate my new and improved boiler of an inner shell member 1. I cut out two V-shaped notches 2 and 3 in one of the side walls of the inner shell member, and I cut like V-shaped notches 4 and 5 in the oppositely disposed sidewall of the inner shell member.' The crown of the sheet isrounded preferably being so made half-circular in 'section view. The V- edges 6 and 7, of the boiler shell to the apex 90 as illustrated at 8 where it forms an arc of` a.

circle.

vnormally stand substantially vertical with re- The lower portions of the end wall 9,

verse bends 10, 11 and 12 being provided to 'form a pair of sheets 13 and 14 lfrom the end sheet 95 that is adapted for being fitted directly into the top notches 3 and 5 of the side wall sheet. When so fitted thereto, the meeting edges of the respective sheets are secured together as by being welded. The top 15, of the-end wall lies sub-1 100 stantially in the same plane as the end wall 9 to form an inner shell member, the end wall of which, lies in a single plane. A smoke o utlet 16', is provided in the inner wall member into which any. suitable thimble or collar `may* be tted to facilitate the attachment of a smoke pipe thereto. The oppositely disposed end qf the inner shell is comprised of a base Wall 17, and a top wall 18. Reverse bends 19, 20-and 21 are .formed in the sheet to form a pair of sheets 22 and 23, that are adapted to fit into the slits 2 and 4. The meeting edges of the end sheet are welded to the meeting edges of the side wall. When the sheets forming the end walls and the side wall are sealed together, the inner shell of the boiler is formed.- Feet 24 and 25 outwardly extend from the base to which the outer shell member may be attached. The outer side wall and crown sheet are illustrated in Fig. 8. I form the end walls of the outer sheet as illustrated in Fig. 9 and in Fig. 10. A foot 26 is formed at the base of the outer end member 27, and the meeting edges of the end wall are made to engage and t the end walls of the outer side wall member as illustrated in Fig. 8, and the same is secured thereto as by being welded thereto. A smoke pipe outlet 28, is provided and the same is adapted for being placed in registry alignment with the smoke pipe outlet 16. The oppositely disposed end. wall 29 of the outer sheet is adapted to precisely engage'the meeting edges of the other end of the side wall member 30, and the meeting edges are secured together asl by being welded together.

A foot 31 inwardly extends from the end wall 29, and a clean-out hole 32 is provided in the end wall memberv 29. In order to strengthen and reinforce the walls 13 and 14, and the walls 22 and 23, of the inner end wall members, spaced members 33 are placed within these openings and the same are secured to the top and bottom sheet members on their oppositely disposed ends as by being welded thereto. Channel walls 34 and 35 and 36 are provided to form a suitable base support for the boiler assembly. The primary purpose and object in making these walls channel-shaped is to facilitate the placing of a refractory lining therein. This forms a re box 38, Within the base of the boiler. Where my new and improved boiler is to be fired by oil, a suitable burner hole 39 is provided adjacent the base, through which the burner nozzle maybe entered chamber. I provide a plurality of spaced stay bolt holes 40 in the outer side wall member, and a like number of spaced stay bolt holes 41, in each side of the inner shell member to facilitate the passing of stay bolts therethrough. I also vprovide suitable spaced stay bolt holes 42, in the outer shell member, and a like number of spaced stay boltholes 43, in the side walls of the inner side wall shell member. The spaced stay bolt holes 43 are placed preferably midway between the edges 44 and 45 of the space that is disposed between the notches 2 and 3, 4 and 5. A plurality of top spaced stay bolt holes 46 are provided also through the outer side wall member, and a. like number of spaced stay bolt holes 47 are disposed Within the top portion of the respective side wall members. The spaced stay bolt holes 46 and 47 are placed in registry alignment with each other to facilitate the passage of stay bolts therethrough. The inner and outer end wall members are also secured together and reinforced by suitable stay bolts.

It will be seen that I have formed a boiler,

into the fire box having a water leg extending entirely around the base thereof in which the water disposed therein is distributed over a maximum area of heating` surface formed by the respective Walls 13 and 14, 22 and 23, thus greatly increasing the capacity of the boiler, and dispensing with the use of fiues and tubes. The forming of the walls 13 and 14, 22 and 23 with sloping surfaces increases the draft of the boiler and facilitates the withdrawal of the products of combustion. The clean-out hole 32 facilitates the removal of any soot orA lfacilitate the flushing and washing of the same.

I place hand clean-out holes 53 and 54 in the oppositely disposed ends of the boiler. These clean-out holes are placed in registry alignment with the bends that are formed integral with the inner sheet of the boiler in order that the top 55 and the top 56 of the respective plates may be washed free and clean from any deposit and incrustation that may form thereupon.

A ushing hole 57 is also disposed in the side wall of the outer sheet. This together with the other flushing holes, heretofore provided for, facilitates the free iiushing of each of the water legs from any sediment or precipitation that may accumulate therein.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention-to the one embodiment herein shown and described, as it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow.

. What .I claim is: 2

l. In a device of the class described, the combination of an outer shell formed from a rectangular sheet of material into a member having an inverted U-shaped cross section; a pair of outer end members shaped to conform to the ends of the outer shell member and attached thereto, and having inwardly projecting flanges along their lower ends; -an inner shell formed from a rectangularN sheetof material into a member having an inverted U-shaped cross section, and provided with outwardly projecting flanges along its lower ends, and having staggered pairs of complementary V-shaped slits extending longitudinally of its sides, the said outwardly projecting flanges being adapted for attachment to the lower edges of the outer shell member; a pair of inner end membersv shaped to conform to the ends of the inner shell member and attached thereto, and provided with-reverse bends adapted to nest within the V-shaped slits disposed within the inner shell member and attached thereto, the lower ends of the inner end members being attached to the inwardly projecting flanges of the outer end members.

2. In a device of the class described, the combination of an outer shell formed from a rectangular plate into a member having an inverted U-shaped cross section with plane parallel sides; a pair of outer end members shaped to conform to the ends of the outer shell member and attached thereto, and having inwardly projecting anges along their lower ends; an inner shell formed from a rectangular plate into a member having an inverted U-shaped cross section with plane parallel sides and smaller than the outer shell member, and provided with outwardly proiecting flanges alongvits lower ends, and having staggered pairs of overlapping complementary V-shaped slits extending longitudinally of its sides, the said outwardly projecting anges being adaptedfor attachment to the lower edges of the outer shell member; a pair of inner end members shaped to conform to the ends of the inner shell member and attached thereto, and provided with reverse bends adapted to nest within the V-shaped slits disposed wlthin'the inner shell member and attached thereto, the lower ends bers; a smoke pipe and a tiring aperture placing the interior of the boiler in open communication with the exterior.

' GUY L. BANTA. 

